Bench-vise.



PATENTED JUNE 6, 1905.' E. S. WILLIAMSON.

v BENCH VISE.

APPLIOATION FILED APR.1z,19o4.

No. 791,711.1..l

rmLz

Patented June 6, 1905.

PATENT OFFICE.

ELI S. WILLIAMSON, OF BUFFALO, NEW YORK.

BENCH-VISE.

SPECIFICATION forming part of Letters Patent No. 791,741, dated June 6,1905.

Application led April l2, 1904. Serial No. 202,788.

will enable others skilled in the art to which it appertains to make anduse the same, reference being had to the accompanying drawings, and toiigures of reference marked thereon, which form a part of thisspecification.

My invention relates to improvements in bench-vises, its object being tomaterially quicken the operation of adjusting the relative position ofthe jaws preparatory to gripping the object between the same.

Heretoiore the movable jaw has been manipulated to and from the iixedjaw by the usual screw-thread movement, which necessarily requires timein its accomplishment, which may be advantageously avoided.

The object, therefore, of my present in-1 vention is to provide improvedquick-acting means whereby the movable jaw can be quickly adjusted toand from the fixed jaw independently'of the screw movement andsubsequently thrown into operative engagement with the screw movement toeiiect the iinal gri ing of the jaws against the object to be hellthereby.

To these ends my invention consists of certain details of construction,all of which will be fully hereinafter described and claimed.

In the drawings, Figure 1 is a side elevation, partly in section, of myimproved vise. Fig. 2 is an end elevation of the same. Fig. 3 is avertical transverse section of Fig. 1, taken in the line :1c and Fig. 4is a similar section taken in the line y y.

Referring to the drawings, 1 is the fixed jaw, having the cylindricalshank 2, adjustable in a vertical plane in the horizontal cylindricalsocket 3, rigid with the base 4.

5 is the movable jaw, provided with the inverted channel-sha ed shank6,'movable in the rectangular soc et 7 in the shank 2 ofthe ixed jaw 1.

Upon a table 8, rigid with jaw l, rises a rigid rectangular cage 9,having u on its loorrthe centrally-arranged depresse channel 10. In thiscage 9 is slidably engaged the rectangular bar 11, having upon its underface the spaced transverse serrations 12, narrower than the width of thebar 11 and adapted to slide within the depressed channel 10 in the cage9.`

13 is the operating-screw in adjustable engagement with thescrew-threaded socket 14 in the bar 11. The shank 15 of this screw 13,extends outside the outer end of the mov- .able jaw 5 and carries theAturning-lever 16.

The shank 15 has a reduced section 17, into which projects the screw 18,which limits the Y play of the movable jaw under the action of itsoperating-screw 13. A collar 19, rigidly secured to shank 15, holds suchshank 15 against withdrawal from the movable jaw 5.

In the table 8 is a vertical recess 20, kin which plays thelocking-block21, having on its upper face the serrations 22, adapted forengagement with the serrations 12 on the bar 1'1. In the lower end ofthis block 21 is the open recess 23, adapted for the receptionof theeccentric-pin 24 on the inner end of the shank 25, seated in the table 8and having on its outer end the I ever 26.

27 is a rod in screw-threaded engagement with the cage 9, around whichthespiral spring 28 loosely rests. v

29 is a plate attached to the end of the bar 11 by the screw 30. Thisplate extends down below the rod 27, which passes loosely through theoriice 31` in the lower end of the plate 29.

In operating the device the lever 26 is allowed to hang down vertically,in which position the locking-block is out of engagement with theserrated bar 11. able jaw is thus free to be pulled out to the distancerequired, where by turning the lever 26 up in either direction 'the-eccentric-pin forces up the locking-block 21 until its serrationsengage with the serrations on the bar 11. 'Ifhen by turning the lever 16of the vise the jaws l and 5 can be gripped tightly upon the objectplaced between them. The limited play of the. operating-screw 13 is all9() The movthat is necessary for the final gripping action of the jaws.When the movable jaw 5 is pulled out, the spiral spring 28 is compressedbetween the plate 29 and cage 9, so that when the aws are moved apart bythe lever 16 to release the object and the lever 26 is dropped down toits vertical position, thus releasing the locking-block 21 fromengagement with the bar 11, the jaws 1 and 5 are caused to springtogether.

It is apparent from the foregoing description that with my improvedarrangement much valuable time is saved by the quickacting adjustment ofthe jaws prior to the final gripping action, the two adjustments beingrapidly and easily thrown in and out of engagement by the lever 26actuating the locking-block 21.

I claimj l. A bench-vise, comprising a fixed jaw having a cylindricalshank and an integral table formed therewith in advance of the shank, acage formed integrally with and upon the table, a movable jaw having aninverted channel-shaped shank fitting in the shank of the fixed jaw andhaving a depending portion at its forward end, a slidable locking-bararranged for longitudinal movement within .the cage, the bar having ascrewthreaded bore in its forward end and a serrated under surface, arod connected with the cage and extending rearwardly thereof beneathsaid bar, a connection between the bar and rod at the rear end thereof,a coilspring associated with the rod between the rear end of the cageand the said connection, a slidable locking-block arranged for verticalmovement within the cage, the upper face of the latter being serrated tocoperate with the serrations in the under face of the aforesaid bar, acam-lever associated with the vertically-movable locking-block forraising and lowering the latter, and a turning -level piercing thedepending portion of the movable aw and having screw-threaded engagementin the aforesaid bore of the locking-bar.

2. A bench-vise, comprising a fixed jaw having a cylindrical shank andan integral table formed therewith in advance of the shank, a cageformed integral with and upon the table, a movable aw having an invertedchannel-shaped shank fitted in the shank of the fixed jaw and having adepending portion at its forward end, a slidable locking-bar ar- `rangedfor longitudinal movement within the cage, the bar having ascrew-tlneauled bore in its forward end and a serrated under surface, aslidable locking-block arranged for vertical movement within the cage,the upper face of the latter being serrated to cooperate with theserrations in the under face of the aforesaid bar, a cam-leverassociated with the vertically movable locking block for raising andlowering the latter, and a turning-lever piercing the depending portionof the movable jaw and having screw-thremled engagement in the aforesaidbore of the locking-bar.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ELI S. WILLIAMSON.

Witnesses:

K. T. MILLER, W. T. MILLER.

